I come in many forms, but only the first one truly matters. Ignore the rest, for they do not count.

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Across
  1. 2. The opposite of early.
  2. 3. The fifth letter of the English alphabet.
  3. 5. A number that comes after three and before five.
  4. 6. A verb that means "to exist."
Down
  1. 1. The 15th letter of the English alphabet.
  2. 2. A written or printed communication sent to someone.
  3. 4. Pronoun often used to refer to oneself.